The items were insured but the invasion of privacy had taken an emotional toll.
"Things in life are replaceable and we're not materialistic people, but these were necessities for Korbin because he has never lived the life of an average teenager," said Darwin. "This hurts. He's scared that it's going to happen again, I guess.
"This kid has had to fight so hard and the very few good things in life that he does have, without somebody even thinking, they've just come and taken that from him."
Darwin, the sole carer for Korbin and his two younger siblings, was also worried about infection from germs the thieves may have brought with them.
"[Korbin] has to live in a healthy, sterile environment. It's just horrible."
The family was also reeling from the news this week that Korbin's health had taken a turn for the worse. He will be returning to Auckland for more treatment.
"We have been going really well, but it's not so good at the moment," Darwin said. "We'll pick ourselves up again and the transplant team are the best people to be helping us, so they manage his health very well.
"We know that we have a long road ahead of us, but we have light at the end of the tunnel now, whereas prior to the transplant, we didn't."
Cure Kids invests in medical research into heart disease and organises events like Walk on the Wild Side, a 5km charity walk that Korbin and his mum took part in last November.
Darwin said Cure Kids had been wonderful to Korbin. He had "a ball" meeting his All Blacks heroes and seeing the Rugby World Cup trophy last week.
Korbin returned to school this year and was studying towards his NCEA exams.